# サテロク vs ETR

The clearest difference is update cadence: ETR at monthly against サテロク's every 3 months. サテロク's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

サテロク ships an update every 3 months, ETR monthly. The most recent releases landed on September 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | サテロク | ETR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 24 MB | 30 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aucnet Inc.](https://appshunter.io/developer/451684427) | [CODIUM Co. Ltd.](https://appshunter.io/developer/688336925) |

## What reviewers say

### サテロク

[App page](https://appshunter.io/ios/app/id1322425010)

**In-app purchases:** none


### ETR

[App page](https://appshunter.io/ios/app/etr-buy/id1548670552)

**In-app purchases:** none


## Frequently asked questions

### Is サテロク free?

サテロク is free to download, with no in-app purchases.

### Is ETR free?

ETR is free to download, with no in-app purchases.

### Do サテロク or ETR have ads?

Neither サテロク nor ETR shows ads.

### Which is updated more often, サテロク or ETR?

サテロク ships an update every 3 months, and ETR monthly. Most recently, サテロク was updated on September 20, 2026 and ETR on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*